Two men named Alexander aspired to live up to the legend of Alexander the Great using technology to circumvent the global powers of their day.
Alexander Mason used his advanced knowledge to manipulate magnetic fields, and gained great strength and flight as a result. After initially dueling with Earth-One's Superman by himself he was joined by Queen Bee attempting to make themselves sovereigns of that world. Their dreams were unrealized.
Another Alexander experimented on a different fundamental force than his counterpart, learning how to increase the gravitational pull of objects including humans. Initially battling Earth-Two's Hawkman, who's nth metal belt was immune to the villain's weaponry, Alexander returned as a henchman in Ian Karkull's scheme. Once more, he was dethroned from his aspirations.